Headphone



FIG. 1 is a perspective view of a headphone, showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an enlarged view of a claimed portion thereof; and,

FIG. 9 is an enlarged sectional view along line A-A of range B in FIG. 8.

The broken lines shown in the drawings depict portions of the headphone that form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 